Dormer Drill Bit HSS 1/8″

87.75

  • TiN-Tip Thermal Barrier The Titanium Nitride coating at the point reduces friction and dissipates heat, allowing for faster feed rates and a service life up to three times longer than standard uncoated HSS bits.

  • Precision Self-Centering Equipped with a 118° split point geometry, the bit bites into the material immediately. This eliminates “walking” or “skating” and removes the need for a center punch, ensuring pinpoint accuracy on metal or plastic surfaces.

  • Efficient Chip Removal Features optimized flute geometry designed to lift and evacuate swarf rapidly. This prevents clogging and heat buildup, which is vital for preventing breakage in 1/8″ bits.

  • Broad Material Versatility Engineered to perform exceptionally well across a wide variety of materials, including alloyed steel, carbon steel, cast iron, and non-ferrous metals like aluminum.

  • Steam Tempered Finish The body features a steam-tempered (blue) finish that improves the retention of cutting lubricants, ensuring the bit remains cool and the hole finish stays smooth.

  • Universal Shank Fit With a diameter of 3.18mm, this bit is compatible with all standard drill chucks, including small rotary tools and standard handheld drills.

Description

The Dormer A002 HSS TiN-Tip 1/8″ is a professional-grade, high-performance jobber length drill bit. As one of the most essential sizes in any toolkit, the 1/8″ bit is the standard tap drill size for No. 5–40 UNC threads and is the primary choice for drilling pilot holes, rivets, and small fasteners. This 1/8″ (3.18mm) bit features Dormer’s flagship TiN-Tip technology. It combines a tough High-Speed Steel (HSS) body with a Titanium Nitride (TiN) coating on the cutting edge. This provides extreme surface hardness at the point of contact while maintaining the flexibility needed to resist snapping—a common issue with bits of this smaller diameter.

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